本文闸述了600MW超临界压力锅炉汽水分离器模型,在锅炉实际启动参数下介质对内壁放热系数的模拟试验研究。试验参数 P为3～11MPa,质量流量G为0.2～0.35kg/s,干度x为0.2～0.8。由导热反问题方法,获得了动态过程中介质对分离器模型内壁的放热系数计算公式。并实际计算了锅炉在冷态启动过程中汽水分离器壁温分布,为进一步进行汽水分离器热应力计算和优化启动过程提供了比苏尔寿公司更可靠、精确的依据。 This paper describes the 600MW supercritical pressure boiler water separator model, the actual starting parameters of the boiler medium on the heat transfer coefficient of the simulation test. The test parameters P is 3 ~ 11MPa, the mass flow rate G is 0.2 ~ 0.35kg / s, the dryness x is 0.2 ~ 0.8. By the inverse heat conduction problem, the formula for calculating the exothermic coefficient of the inner wall of the separator model in the dynamic process is obtained. And the actual boiler wall temperature distribution during the cold start-up process is calculated, which provides a more reliable and accurate basis for the further calculation of the thermal stress of the water separator and the optimization of the start-up process than the Sulzer Company.